Re: BUG #5963: make -j4 check fails

> The following bug has been logged online:
>
> Bug reference: 5963
> Logged by: Gavin Flower
> Email address: gavin(dot)flower(at)archidevsys(dot)co(dot)nz
> PostgreSQL version: 9.1alpha5
> Operating system: x86_64 Linux
> Description: make -j4 check fails
> Details:
>
> After executing
> time -j4 make
> I went to initiate the testing (note: I deleted the directory, re-extracted
> and repeated the compile for each of the following options):
>
> executing
> time make check
> works (All 126 tests passed)
>
> but executing
> time make -j4 check
> fails (I don't see any obvious problem in the log file):
> [...]
> ============== creating temporary installation ==============
>
> pg_regress: installation failed
> Examine
> /home/gavin/AAA/updates/postgresql/postgresql-9.1alpha5/src/test/regress/log
> /install.log for the reason.
> Command was: "make" -C "../../.."
> DESTDIR="/home/gavin/AAA/updates/postgresql/postgresql-9.1alpha5/src/test/re
> gress/./tmp_check/install" install >
> "/home/gavin/AAA/updates/postgresql/postgresql-9.1alpha5/src/test/regress/lo
> g/install.log" 2>&1
> make[2]: *** [check] Error 2
> make[2]: Leaving directory
> `/home/gavin/AAA/updates/postgresql/postgresql-9.1alpha5/src/test/regress'
> make[1]: *** [check] Error 2
> make[1]: Leaving directory
> `/home/gavin/AAA/updates/postgresql/postgresql-9.1alpha5/src/test'
> make: *** [check] Error 2
>
> real 0m3.253s
> user 0m1.666s
> sys 0m1.141s

I did some bisecting, and it appears the problem was introduced in the
commit "Improved parallel make support" on November 12, 2010.